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Magnetic Chip Shield 


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Magnetic Chip Shield 

Written By: Jeremy BloydPeshkin 


• 6-32 Tap (1) • Aluminum bar (1) 

• Hack saw (1) This should be no smaller than 5/8" x 

1/2" x 4" 

• Milling machine (1) 

Neodymium magnet (2) 
6-32 Set Screw (3) 
• 1/4" Plexiglass (1) 


For too long I've been standing in the stream of chips flying off my milling machine. This 
small shield sticks to my milling vise magnetically, and takes less than an hour to make. It 
does a good job of helping keep chips contained, especially when using cutting fluid or fly 
cutters. I've also found it to be useful on my drill press. 

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Magnetic Chip Shield 

Step 1 — Clean up the aluminum 

•"* ^-^&a*rr 

• Take the rough bar, and trim it to 4" x 5/8" x 1/2". 

• Dimensions aren't very critical in this project; if you have a 5/8" x 1/2" bar, just take 
a very light cut off each side to make it look nice. 

Step 2 — Mill a groove 

• Mill a 0.25" wide groove 0.25" deep. It should be in 0.10" from one edge. 

• I'm using one of these chip shields in the second photo. Notice the pile of chips 
behind it and lack of chips in front. 

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Magnetic Chip Shield 

Step 3 — Drill the set screw holes. 

• Cutting the groove in the last step created a thin side and a thick side. These holes will be 
drilled through the thick side. 

• Spot, drill, and tap three holes 0.125" from the top, at 1", 2", and 3" in from one end. 

Step 4 — Attach magnets 

• Drill two holes on the bottom with a 
drill bit the same diameter as the 
magnets. Don't drill all the way 
through, just deep enough for the 
magnets to sit flush. 

• Glue in the magnets with J-B Weld 
or another suitable glue. Make sure 
they are perfectly flush with the 
bottom of the part. 

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Magnetic Chip Shield 

Step 5 — Cut and insert plexiglass 

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: --'--- : ■■■.■■' ^w. 


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• Cut a piece of 0.25" thick plexiglass. Make it whatever dimensions best fit your machines. 
4" x 3" is a convenient size for me. 

• Slide it into the slot, and insert three 6-32 setscrews into the holes you drilled and tapped. 
Stick it to your machine and enjoy! 

• This cannot replace safety glasses, nor is it meant to. It just helps reduce the 
amount of swarf flying at you. 

This document was last generated on 2012-10-31 01 :20:45 AM. 


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